The latest officially reported population of Germany was 83,516,593 in 2024 vs 1,368,333 people in Trinidad and Tobago in 2024. In 2026, based on the adjusted UN estimation, the current Germany's population is 82,575,542 people compared to 1,374,840 in Trinidad and Tobago.
Population statistics:
- Germany's population is 60.1 times bigger than Trinidad and Tobago's.
- Germany is ranked the 19th most populous country in the world, while Trinidad and Tobago is the 154th.
- The countries together account for 1.01% of the world: 1% for Germany vs 0.02% for Trinidad and Tobago.
- For the last 10 years, Germany has had an average growth rate of +0.32% per year vs +0.19% in Trinidad and Tobago.
- Since 2006, the population of Germany has increased from 82.4M people to 82.6M (0.24% growth), while Trinidad and Tobago has grown from 1.3M to 1.37M (5.92% growth).
Germany vs Trinidad and Tobago: population by year and forecast
| Year | Population | |
|---|---|---|
Germany
|
Trinidad
|
|
| 2100 | 69,929,981 | 820,139 |
| 2099 | 69,956,854 | 827,732 |
| 2098 | 69,973,838 | 835,344 |
| 2097 | 70,015,834 | 843,011 |
| 2096 | 70,046,713 | 850,741 |
| 2095 | 70,067,131 | 858,556 |
| 2094 | 70,085,911 | 866,373 |
| 2093 | 70,106,718 | 874,273 |
| 2092 | 70,132,132 | 882,213 |
| 2091 | 70,178,440 | 890,266 |
| 2090 | 70,240,137 | 898,378 |
| 2089 | 70,294,005 | 906,601 |
| 2088 | 70,352,443 | 914,872 |
| 2087 | 70,434,814 | 923,272 |
| 2086 | 70,532,124 | 931,804 |
| 2085 | 70,627,602 | 940,463 |
| 2084 | 70,722,960 | 949,270 |
| 2083 | 70,829,392 | 958,273 |
| 2082 | 70,932,273 | 967,427 |
| 2081 | 71,045,881 | 976,795 |
| 2080 | 71,171,519 | 986,272 |
| 2079 | 71,305,544 | 995,976 |
| 2078 | 71,445,484 | 1,005,824 |
| 2077 | 71,601,117 | 1,015,872 |
| 2076 | 71,757,525 | 1,026,025 |
| 2075 | 71,891,567 | 1,036,315 |
| 2074 | 72,046,795 | 1,046,695 |
| 2073 | 72,206,145 | 1,057,138 |
| 2072 | 72,356,324 | 1,067,706 |
| 2071 | 72,517,749 | 1,078,279 |
| 2070 | 72,664,462 | 1,088,883 |
| 2069 | 72,828,330 | 1,099,489 |
| 2068 | 72,993,859 | 1,110,059 |
| 2067 | 73,178,408 | 1,120,501 |
| 2066 | 73,370,207 | 1,130,882 |
| 2065 | 73,561,648 | 1,141,203 |
| 2064 | 73,762,096 | 1,151,388 |
| 2063 | 73,971,537 | 1,161,394 |
| 2062 | 74,198,775 | 1,171,232 |
| 2061 | 74,426,082 | 1,180,918 |
| 2060 | 74,678,280 | 1,190,417 |
| 2059 | 74,932,496 | 1,199,770 |
| 2058 | 75,206,278 | 1,208,904 |
| 2057 | 75,482,742 | 1,217,922 |
| 2056 | 75,756,281 | 1,226,725 |
| 2055 | 76,041,477 | 1,235,387 |
| 2054 | 76,325,196 | 1,243,896 |
| 2053 | 76,595,801 | 1,252,160 |
| 2052 | 76,839,962 | 1,260,260 |
| 2051 | 77,084,029 | 1,268,194 |
| 2050 | 77,325,459 | 1,275,900 |
| 2049 | 77,569,721 | 1,283,457 |
| 2048 | 77,818,888 | 1,290,793 |
| 2047 | 78,049,343 | 1,297,947 |
| 2046 | 78,272,834 | 1,304,843 |
| 2045 | 78,497,690 | 1,311,560 |
| 2044 | 78,722,126 | 1,318,015 |
| 2043 | 78,936,540 | 1,324,249 |
| 2042 | 79,130,312 | 1,330,180 |
| 2041 | 79,324,161 | 1,335,843 |
| 2040 | 79,536,735 | 1,341,188 |
| 2039 | 79,754,631 | 1,346,239 |
| 2038 | 79,978,474 | 1,350,921 |
| 2037 | 80,194,225 | 1,355,297 |
| 2036 | 80,425,162 | 1,359,322 |
| 2035 | 80,640,951 | 1,362,986 |
| 2034 | 80,844,719 | 1,366,278 |
| 2033 | 81,069,119 | 1,369,125 |
| 2032 | 81,286,326 | 1,371,607 |
| 2031 | 81,520,272 | 1,373,561 |
| 2030 | 81,736,996 | 1,375,038 |
| 2029 | 81,963,002 | 1,376,018 |
| 2028 | 82,178,048 | 1,376,314 |
| 2027 | 82,384,302 | 1,375,856 |
| 2026 | 82,575,542 | 1,374,464 |
| 2025 | 83,233,941 | 1,372,016 |
| 2024 | 83,516,593 | 1,368,333 |
| 2023 | 83,287,273 | 1,367,510 |
| 2022 | 83,177,813 | 1,365,805 |
| 2021 | 83,196,078 | 1,367,558 |
| 2020 | 83,160,871 | 1,366,725 |
| 2019 | 83,092,962 | 1,363,985 |
| 2018 | 82,905,782 | 1,359,193 |
| 2017 | 82,657,002 | 1,356,633 |
| 2016 | 82,348,669 | 1,353,895 |
| 2015 | 81,686,611 | 1,349,667 |
| 2014 | 80,982,500 | 1,345,343 |
| 2013 | 80,645,605 | 1,340,557 |
| 2012 | 80,425,823 | 1,335,194 |
| 2011 | 80,274,983 | 1,328,019 |
| 2010 | 81,776,930 | 1,317,714 |
| 2009 | 81,902,307 | 1,310,106 |
| 2008 | 82,110,097 | 1,308,587 |
| 2007 | 82,266,372 | 1,303,188 |
| 2006 | 82,376,451 | 1,297,944 |
| 2005 | 82,469,422 | 1,294,494 |
| 2004 | 82,516,260 | 1,345,380 |
| 2003 | 82,534,176 | 1,338,709 |
| 2002 | 82,488,495 | 1,332,011 |
| 2001 | 82,349,925 | 1,325,567 |
| 2000 | 82,211,508 | 1,319,774 |
| 1999 | 82,100,243 | 1,314,708 |
| 1998 | 82,047,195 | 1,310,225 |
| 1997 | 82,034,771 | 1,305,836 |
| 1996 | 81,914,831 | 1,300,928 |
| 1995 | 81,678,051 | 1,295,169 |
| 1994 | 81,438,348 | 1,288,341 |
| 1993 | 81,156,363 | 1,280,466 |
| 1992 | 80,624,598 | 1,271,674 |
| 1991 | 80,013,896 | 1,262,171 |
| 1990 | 79,433,029 | 1,252,208 |
| 1989 | 78,751,283 | 1,241,600 |
| 1988 | 78,144,619 | 1,230,069 |
| 1987 | 77,839,920 | 1,217,364 |
| 1986 | 77,720,436 | 1,203,124 |
| 1985 | 77,684,873 | 1,187,366 |
| 1984 | 77,858,685 | 1,172,984 |
| 1983 | 78,128,282 | 1,160,534 |
| 1982 | 78,333,366 | 1,147,927 |
| 1981 | 78,407,907 | 1,135,132 |
| 1980 | 78,288,576 | 1,121,744 |
| 1979 | 78,126,350 | 1,107,639 |
| 1978 | 78,091,820 | 1,093,380 |
| 1977 | 78,159,814 | 1,079,554 |
| 1976 | 78,336,950 | 1,066,311 |
| 1975 | 78,673,554 | 1,053,469 |
| 1974 | 78,967,433 | 1,040,761 |
| 1973 | 78,936,666 | 1,027,851 |
| 1972 | 78,688,452 | 1,014,921 |
| 1971 | 78,312,842 | 1,002,585 |
| 1970 | 78,169,289 | 991,471 |
| 1969 | 77,909,682 | 980,706 |
| 1968 | 77,294,314 | 969,006 |
| 1967 | 76,951,336 | 956,418 |
| 1966 | 76,600,311 | 942,937 |
| 1965 | 75,963,695 | 928,425 |
| 1964 | 75,318,337 | 912,963 |
| 1963 | 74,714,353 | 896,804 |
| 1962 | 74,025,784 | 880,194 |
| 1961 | 73,377,632 | 863,144 |
| 1960 | 72,814,900 | 844,943 |
Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1960–2024, retrieved 2026-04-06).
GeoRank.org/population/germany/trinidad-and-tobago | CC BY 
From 2006 to 2016, the population of Germany decreased by 27,782 people (a 0.03% decline), while Trinidad and Tobago gained 55,951 people (a 4.31% growth).
For the next 10 years, from 2016 to 2026, Germany gained 226,873 people (a 0.28% growth), while Trinidad and Tobago's population increased by 20,945 people (a 1.55% growth).
Germany was ranked 14th most populous country in 2006 and is 19th in 2026. Trinidad and Tobago was ranked 150th in 2006 and ranked 154th now.
The UN's World Population Prospects forecasts that in 24 years (in 2050) Germany's population will shrink by 6.36% to 77,325,459 people with a rank change from 19th to 25th. The population of Trinidad and Tobago will decrease by 7.2% to 1,275,900 people and rank change from 154th to 158th.
Trinidad and Tobago is projected to reach its peak in 2028 at 1.38M people, while Germany's population already peaked in 2024 at 83.5M people and is projected to decrease to 69.9M people by 2100.
Population growth rate by year
| Year | Growth rate | |
|---|---|---|
|
Germany
|
Trinidad
|
|
| 2100 | -0.04% | -0.92% |
| 2099 | -0.02% | -0.91% |
| 2098 | -0.06% | -0.91% |
| 2097 | -0.04% | -0.91% |
| 2096 | -0.03% | -0.91% |
| 2095 | -0.03% | -0.9% |
| 2094 | -0.03% | -0.9% |
| 2093 | -0.04% | -0.9% |
| 2092 | -0.07% | -0.9% |
| 2091 | -0.09% | -0.9% |
| 2090 | -0.08% | -0.91% |
| 2089 | -0.08% | -0.9% |
| 2088 | -0.12% | -0.91% |
| 2087 | -0.14% | -0.92% |
| 2086 | -0.14% | -0.92% |
| 2085 | -0.13% | -0.93% |
| 2084 | -0.15% | -0.94% |
| 2083 | -0.15% | -0.95% |
| 2082 | -0.16% | -0.96% |
| 2081 | -0.18% | -0.96% |
| 2080 | -0.19% | -0.97% |
| 2079 | -0.2% | -0.98% |
| 2078 | -0.22% | -0.99% |
| 2077 | -0.22% | -0.99% |
| 2076 | -0.19% | -0.99% |
| 2075 | -0.22% | -0.99% |
| 2074 | -0.22% | -0.99% |
| 2073 | -0.21% | -0.99% |
| 2072 | -0.22% | -0.98% |
| 2071 | -0.2% | -0.97% |
| 2070 | -0.23% | -0.96% |
| 2069 | -0.23% | -0.95% |
| 2068 | -0.25% | -0.93% |
| 2067 | -0.26% | -0.92% |
| 2066 | -0.26% | -0.9% |
| 2065 | -0.27% | -0.88% |
| 2064 | -0.28% | -0.86% |
| 2063 | -0.31% | -0.84% |
| 2062 | -0.31% | -0.82% |
| 2061 | -0.34% | -0.8% |
| 2060 | -0.34% | -0.78% |
| 2059 | -0.36% | -0.76% |
| 2058 | -0.37% | -0.74% |
| 2057 | -0.36% | -0.72% |
| 2056 | -0.38% | -0.7% |
| 2055 | -0.37% | -0.68% |
| 2054 | -0.35% | -0.66% |
| 2053 | -0.32% | -0.64% |
| 2052 | -0.32% | -0.63% |
| 2051 | -0.31% | -0.6% |
| 2050 | -0.31% | -0.59% |
| 2049 | -0.32% | -0.57% |
| 2048 | -0.3% | -0.55% |
| 2047 | -0.29% | -0.53% |
| 2046 | -0.29% | -0.51% |
| 2045 | -0.29% | -0.49% |
| 2044 | -0.27% | -0.47% |
| 2043 | -0.24% | -0.45% |
| 2042 | -0.24% | -0.42% |
| 2041 | -0.27% | -0.4% |
| 2040 | -0.27% | -0.38% |
| 2039 | -0.28% | -0.35% |
| 2038 | -0.27% | -0.32% |
| 2037 | -0.29% | -0.3% |
| 2036 | -0.27% | -0.27% |
| 2035 | -0.25% | -0.24% |
| 2034 | -0.28% | -0.21% |
| 2033 | -0.27% | -0.18% |
| 2032 | -0.29% | -0.14% |
| 2031 | -0.27% | -0.11% |
| 2030 | -0.28% | -0.07% |
| 2029 | -0.26% | -0.02% |
| 2028 | -0.25% | 0.03% |
| 2027 | -0.23% | 0.1% |
| 2026 | -0.79% | 0.18% |
| 2025 | -0.34% | 0.27% |
| 2024 | 0.28% | 0.06% |
| 2023 | 0.13% | 0.12% |
| 2022 | -0.02% | -0.13% |
| 2021 | 0.04% | 0.06% |
| 2020 | 0.08% | 0.2% |
| 2019 | 0.23% | 0.35% |
| 2018 | 0.3% | 0.19% |
| 2017 | 0.37% | 0.2% |
| 2016 | 0.81% | 0.31% |
| 2015 | 0.87% | 0.32% |
| 2014 | 0.42% | 0.36% |
| 2013 | 0.27% | 0.4% |
| 2012 | 0.19% | 0.54% |
| 2011 | -1.84% | 0.78% |
| 2010 | -0.15% | 0.58% |
| 2009 | -0.25% | 0.12% |
| 2008 | -0.19% | 0.41% |
| 2007 | -0.13% | 0.4% |
| 2006 | -0.11% | 0.27% |
| 2005 | -0.06% | -3.78% |
| 2004 | -0.02% | 0.5% |
| 2003 | 0.06% | 0.5% |
| 2002 | 0.17% | 0.49% |
| 2001 | 0.17% | 0.44% |
| 2000 | 0.14% | 0.39% |
| 1999 | 0.06% | 0.34% |
| 1998 | 0.02% | 0.34% |
| 1997 | 0.15% | 0.38% |
| 1996 | 0.29% | 0.44% |
| 1995 | 0.29% | 0.53% |
| 1994 | 0.35% | 0.62% |
| 1993 | 0.66% | 0.69% |
| 1992 | 0.76% | 0.75% |
| 1991 | 0.73% | 0.8% |
| 1990 | 0.87% | 0.85% |
| 1989 | 0.78% | 0.94% |
| 1988 | 0.39% | 1.04% |
| 1987 | 0.15% | 1.18% |
| 1986 | 0.05% | 1.33% |
| 1985 | -0.22% | 1.23% |
| 1984 | -0.35% | 1.07% |
| 1983 | -0.26% | 1.1% |
| 1982 | -0.1% | 1.13% |
| 1981 | 0.15% | 1.19% |
| 1980 | 0.21% | 1.27% |
| 1979 | 0.04% | 1.3% |
| 1978 | -0.09% | 1.28% |
| 1977 | -0.23% | 1.24% |
| 1976 | -0.43% | 1.22% |
| 1975 | -0.37% | 1.22% |
| 1974 | 0.04% | 1.26% |
| 1973 | 0.32% | 1.27% |
| 1972 | 0.48% | 1.23% |
| 1971 | 0.18% | 1.12% |
| 1970 | 0.33% | 1.1% |
| 1969 | 0.8% | 1.21% |
| 1968 | 0.45% | 1.32% |
| 1967 | 0.46% | 1.43% |
| 1966 | 0.84% | 1.56% |
| 1965 | 0.86% | 1.69% |
| 1964 | 0.81% | 1.8% |
| 1963 | 0.93% | 1.89% |
| 1962 | 0.88% | 1.98% |
| 1961 | 0.77% | 2.15% |
Data sources: United Nations | World Population Prospects (2025–2100, retrieved 2026-03-10); World Bank | Health (1961–2024, retrieved 2026-04-06).
GeoRank.org/population/germany/trinidad-and-tobago | CC BY
In 2024, the population of Germany grew by 0.28%, while Trinidad and Tobago's population grew by 0.06%.
Live population counters
|
Germany
|
Trinidad
|
|
|---|---|---|
| Current population |
82575542
|
1374840
|
| Population rank | 19/197 | 154/197 |
| Percent of world population | 1% | 0.02% |
| One net population change |
2.29 minutes
|
10.6 hours
|
| One birth every |
45.6 seconds
|
35.9 minutes
|
| One death every |
30.8 seconds
|
45.9 minutes
|
| Daily growth/decline | +628 | +2 |
| Annual growth/decline | +229,320 | +823 |
| Annual growth/decline rate | +0.28% | +0.06% |
| Population growth rate rank | 151/197 | 161/197 |
| One migration net change every |
1.58 minutes
|
12.7 hours
|
| Annual migration change | -334,072 | +691 |
| Net migration rank | 192/196 | 67/196 |
| Foreign-born residents | 16,750,084 | 113,478 |
| Foreign-born residents rank | 2/195 | 128/195 |
| Foreign-born share of population | 19.8% | 7.5% |
| Foreign-born share rank | 31/195 | 78/195 |
Natural population change vs migration
| Year | Population change | |||
|---|---|---|---|---|
|
Germany
|
Trinidad
|
|||
| Natural | Migration | Natural | Migration | |
| 2025 | - | -334,072 | - | 691 |
| 2024 | - | 36,954 | - | 1,334 |
| 2023 | -333,149 | 609,553 | 3,200 | 2,126 |
| 2022 | -324,394 | 981,552 | 3,773 | 4,247 |
| 2021 | -224,629 | 310,264 | 2,091 | 5,749 |
| 2020 | -216,218 | 203,468 | 4,558 | 427 |
| 2019 | -157,877 | 319,082 | 5,647 | -19,251 |
| 2018 | -165,812 | 403,908 | 5,869 | 35,502 |
| 2017 | -148,783 | 452,988 | 6,779 | 1,445 |
| 2016 | -123,523 | 517,480 | 7,436 | -86 |
| 2015 | -187,879 | 1,175,283 | 7,963 | -575 |
| 2014 | -153,866 | 592,338 | 8,571 | -799 |
| 2013 | -209,679 | 462,384 | 9,020 | -796 |
| 2012 | -193,022 | 199,143 | 9,376 | -880 |
| 2011 | -184,632 | 295,282 | 9,601 | -1,410 |
| 2010 | -179,909 | 130,116 | 9,698 | -2,230 |
| 2009 | -188,375 | 46,533 | 9,769 | -3,056 |
| 2008 | -164,220 | -23,341 | 9,872 | -3,624 |
| 2007 | -148,080 | -24,772 | 9,939 | -3,731 |
| 2006 | -148,278 | -489,056 | 9,889 | -3,684 |
| 2005 | -148,445 | 81,351 | 9,822 | -3,595 |
| 2004 | -107,271 | 81,735 | 10,149 | -3,504 |
| 2003 | -140,309 | 142,009 | 10,169 | -3,472 |
| 2002 | -123,733 | 218,795 | 10,316 | -3,613 |
| 2001 | -98,820 | 272,875 | 10,438 | -4,252 |
| 2000 | -73,990 | 174,594 | 10,588 | -5,185 |
| 1999 | -73,890 | 219,280 | 10,821 | -6,103 |
| 1998 | -65,637 | -754,469 | 10,964 | -6,730 |
| 1997 | -49,221 | 93,281 | 11,405 | -6,865 |
| 1996 | -90,107 | 281,280 | 12,101 | -6,827 |
| 1995 | -114,349 | 398,077 | 12,971 | -6,723 |
| 1994 | -114,013 | 315,585 | 14,032 | -6,615 |
| 1993 | -105,503 | 462,096 | 14,878 | -6,554 |
| 1992 | -80,625 | 811,606 | 15,910 | -6,650 |
| 1991 | -80,014 | 602,638 | 16,903 | -7,149 |
| 1990 | -15,887 | 679,702 | 18,052 | -7,878 |
| 1989 | -23,625 | 761,002 | 19,636 | -8,588 |
| 1988 | -7,815 | 515,962 | 21,028 | -9,023 |
| 1987 | -31,136 | 174,272 | 22,398 | -9,002 |
| 1986 | -77,721 | 212,822 | 23,705 | -8,620 |
| 1985 | -116,527 | 103,556 | 24,487 | -8,051 |
| 1984 | -109,002 | -150,771 | 24,738 | -12,413 |
| 1983 | -109,380 | -81,349 | 25,118 | -12,544 |
| 1982 | -78,333 | -58,121 | 25,181 | -12,529 |
| 1981 | -94,090 | 130,713 | 25,015 | -12,086 |
| 1980 | -86,117 | 324,203 | 24,557 | -10,709 |
| 1979 | -125,002 | 237,705 | 23,475 | -9,106 |
| 1978 | -140,566 | 117,167 | 22,538 | -8,397 |
| 1977 | -125,055 | 33,881 | 21,660 | -8,154 |
| 1976 | -164,508 | -79,761 | 20,875 | -7,895 |
| 1975 | -212,418 | -207,740 | 20,468 | -7,768 |
| 1974 | -150,038 | -15,126 | 20,412 | -7,683 |
| 1973 | -149,980 | 386,881 | 20,617 | -7,524 |
| 1972 | -62,950 | 336,015 | 20,116 | -7,346 |
| 1971 | 46,988 | 450,328 | 19,400 | -7,499 |
| 1970 | 70,352 | -273,498 | 19,074 | -8,751 |
| 1969 | 155,820 | 584,017 | 19,652 | -8,449 |
| 1968 | 239,612 | 293,307 | 20,849 | -8,647 |
| 1967 | 353,977 | -174,155 | 21,992 | -9,008 |
| 1966 | 405,982 | 134,107 | 23,228 | -9,254 |
| 1965 | 410,204 | 338,258 | 24,349 | -9,301 |
| 1964 | 482,038 | 69,825 | 25,065 | -9,193 |
| 1963 | 455,757 | 205,976 | 25,507 | -9,067 |
| 1962 | 436,752 | 276,505 | 25,763 | -8,982 |
| 1961 | 462,279 | 27,534 | 25,518 | -8,200 |
| 1960 | 385,919 | 212,666 | 24,766 | -5,671 |
Data sources: World Bank | Health (1960–2025, retrieved 2026-04-06).
GeoRank.org/population/germany/trinidad-and-tobago | CC BY
Over the last 10 years, 26.8% of the population change in Germany is from natural causes (a loss of 2,036,130 people) and 73.2% is from migration (a gain of 5,565,916 people). In Trinidad and Tobago 66% is from natural causes (a gain of 55,887 people) and 34% is from migration (a gain of 28,785 people).
As of 2024, 16,750,084 residents or 19.8% of the population were not native-born in Germany, compared to 113,478 people or 7.5% in Trinidad and Tobago.
Biggest cities by population
Compare countries by 7 more topics
Population differences between Germany and Trinidad and Tobago
|
Germany
|
Trinidad
|
|
|---|---|---|
| Life expectancy | 81.9 years | 73.9 years |
| Average age | 45 years | 38.2 years |
| Median age | 46.3 years | 38.2 years |
| Male:Female ratio | 49.4:50.6 | 49.4:50.6 |
| Fertility rate | 1.39 births per woman | 1.53 births per woman |
| Population density | 612 ppl/mi² | 694 ppl/mi² |
Population map with other countries
Data sources: World Bank | Health (1960–2024, retrieved 2026-04-06); United Nations | World Population Prospects (1960–2026, retrieved 2026-03-10); U.S. Census Bureau (1960–2025, retrieved 2026-02-08); Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20).
GeoRank.org/population/germany/trinidad-and-tobago | CC BY
Help us show the world through your eyes
Share a photo of your city and help others discover what it looks like to live there. Your contribution makes our data come alive.
Data sources:
- World Bank | Health (1960–2025, retrieved 2026-04-06)
- United Nations | World Population Prospects (1960–2100, retrieved 2026-03-10)
- U.S. Census Bureau (1960–2025, retrieved 2026-02-08)
- Central Intelligence Agency (CIA) (2000–2019, retrieved 2026-02-20)
- Wikidata (2026, retrieved 2026-02-08)
Creative Commons Attribution (CC BY) — you’re free to copy, share, remix, adapt, and use even commercially as long as you give appropriate credit and clearly indicate if you made changes. Other sources may be subject to different license terms.